After building the base I decided to simplify things a bit, eliminating the sliding piece on top as I won’t be needing it and using a single pivoting support under the tool bed allowing greater range of angles. I used 3/4” material instead of 1/2”. It’s not quite done, there is a 1/4” dowel acting as the pivot pin until I get to the store and buy a 1/4” carriage bolt and wingnut. This rest will not really work for my hand grinder without me building an additional base to raise it up and support it cantilevered off the work bench. What I’ll probably do is use this one for my electric grinder and design a taller one for the Prairie Grinder that can be clamped to the workbench.